News Release Archive:

News Release 678 of 1051

October 31, 2000 01:00 AM (EST)

News Release Number: STScI-2000-33

Astronomers Ponder Lack of Planets in Globular Cluster


Image: A Planet's Telltale Signature

A Planet's Telltale Signature

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This diagram illustrates how a planet passing in front of a star blocks a tiny amount of starlight. In this case, it's a planet crossing the face of a nearby star called HD 209458, located 153 light-years from Earth in the constellation Pegasus. The dip in the center of the diagram represents a 1.7 percent drop in starlight over a three-hour period as the planet moves across the star's disk. By watching this eclipse, astronomers can confirm a planet's existence.

Object Name: HD 209458

Image Type: Illustration

Credits: NASA, T.M. Brown, D. Charbonneau, R.L. Gilliland, R.W. Noyes, & A. Burrows.


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